Catastrophe Academy is an experimental Overseer venture where students are collected from throughout the Overworld to learn the skills and gain the experiences to prevent their own worlds' Catastrophes.

A faction within the Overworld that was supposedly founded in the wake of the Dodra Catastrophe. Little is known, besides the fact that they oppose they appear adversarial to the Overseers but do not appear hostile to the Cadets.

A tremendous recent Catastrophe within the Overworld in which a rogue entity known as Dodra devoured countless worlds and imprisoned the souls within. The Catastrophe was unraveled after a very long time by insurgents within aided by Overseer interference, resulting in a long and complicated reconstruction and healing period for the freed worlds and souls.

Presented as an 'uncorrupted' evolution to Porygon2, Pory-Psi are a marvel of technology the Overseers developed for navigating between worlds. The vessels can near-perfectly replicate the memories of the soul they host to emulate their bodies and abilities, while augmenting them with additional capabilities and compatibility with technologies such as the Nexus.

An incident in which a variant of the PMD world, Cibus, came under threat of a destructive mixture of Shadow-type and Radiant-type energy known as Blacklight. The crisis brought several people in from the human world, including Red, Silver, and Giovanni, while an Overseer Dark Matter named Diyem disregarded protocols and gathered a bunch of heroes from several worlds to fight to protect Cibus. Ultimately, it was found that a version of Team Rainbow Rocket's Giovanni sought this power for himself. However, his gambit collapsed and the energy proved too much for him to handle. The summoned heroes put a stop to it and peacefully returned to their own worlds. Notable people involved in this include: Giovanni (one of the deans), Aria (Mike's girlfriend), Owen (Sera's dad), Serperior Sage (Astrid's teammate), and Kora (Kane's psibuddy).

A second version of the Blacklight Crisis that happened on a different Cibus, involving a different Blacklight energy entity. This crisis also drew in several humans, including alternates of Red, Silver, and Giovanni... and was also opposed by several heroes summoned from various worlds by an Overseer Diyem. They even got to meet the heroes of the original Blacklight Crisis for a little while! Instead of Giovanni as the main driver for the crisis, however, the Blacklight corrupted Zoroark Ionys, who hid on the moon and orchestrated a nearly successful gambit involving several patsies, including Giovanni himself, to acquire immense amounts of Blacklight energy. He was stopped at the last minute, but the Eternal Blacklight gained enough sentience to threaten Cibus and neighboring universes. Fortunately, the summoned heroes were able to put a stop to it and help it be reborn as a fledgling spirit. Notably, both Rocky and Tama were born on Cibus during this crisis. Other notable figures involved include Owen (different from the one in the first Blacklight Crisis) and Astrid.